As far as I know this is not possible to do in ARCHICAD 18.
However, in ARCHICAD 20 there is a new feature called Graphic Overrides, which can define multiple sophisticated override rules, where you specify criteria and an override style and elements meeting the criteria will be applied the override style.
This is a playlist that details the capabilities of this new feature:
https://www.youtube.com/playlist?list=PLnXY6vLUwlWXVIEZ4AFc-HeQtV7tdHs0O
Loving Archicad since 1995 - Find Archicad Tips at x.com/laszlonagy
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